CNC Milling process designing dictates

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The instruction that with coordinate the department concerns 1.

Set workpiece coordinate fastens form of G92 statement statement: : of function of instruction of G92 X__ Y__ Z__ ? Coordinate of workpiece of set of G92 of   of low? of Han of  of  of Zan ü ぜ is a graph statement of department of coordinate of workpiece of set of 2   G54 explains: (1) builds workpiece coordinate on the machine tool is (also calling process designing coordinate is) ; (2) is shown 1 times like the graph, coordinate value X, Y, Z is cutting tool knife the point coordinate value in workpiece coordinate department (also weigh dot removing a knife or change a knife to nod) ; (3) handlers must be checked after workpiece is installed or adjust cutting tool knife dot, the workpiece coordinate that sets in order to ensure the workpiece coordinate of the set on the machine tool is when department and process designing on the spare parts fastens the coincide on buy of v/arc be on the throne to agree; (The work with more intricate to dimension 4) , for computation simple, the course that can change workpiece coordinate to fasten arbitrarily in process designing at 0 o'clock. (5) has the method that coordinate of workpiece of two kinds of set fastens in CNC Milling: As above graph is shown 1 times, determine the position of the spot that change a knife of cutting tool first, nod the origin that coordinate of positional set workpiece fastens according to changing a knife by G92 instruction next, coordinate of the X in 1)G92 instruction, Y, Z expresses the dot that change a knife to tie the coordinate cost in XpYpZp in workpiece coordinate; 2) is shown 2 times like the graph, fasten XpYpZp through fastening the relative position of XYZ to build workpiece coordinate with machine tool coordinate, if some numerical control systems use G54,coordinate of the X of the instruction, Y, Z expresses workpiece coordinate to fasten origin to tie medium coordinate cost in machine tool coordinate. 2.

Form of instruction of G90 of means of absolutely coordinate input and statement of statement of G91 of means of increment coordinate input: G: of function of 90 G91 instruction? Imperial order of bright Cong of Zan ㄗ  wrings street Ga bracelet to get?(1)G90 instruction to build absolutely coordinate to input means, the coordinate value X that mobile instruction target nods, Y, Z states cutting tool leaves workpiece coordinate is the distance of origin; (2)G91 instruction builds increment coordinate to input means, the coordinate value X that mobile instruction target nods, Y, Z states cutting tool leaves bit more current coordinate increment. Example: If the graph is shown 3 times, cutting tool nods sudden shift to C from A, use absolutely coordinate and process designing of increment coordinate means. Graph 3 use process designing of absolutely coordinate and means of increment of process designing of increment coordinate means: Process designing of absolutely coordinate of G92 X0 Y0 Z0G91 G00 X15 Y-40G92 X0 Y0G00 X20 Y10X40 Y20: G92 X0 Y0 Z0 sets workpiece coordinate to fasten origin, o of the dot that change a knife and machine tool coordinate fasten origin coincide; Cutting tool of G90 G00 X15 Y-40 moves to be nodded to Op quickly; Coordinate of workpiece of reset of G92 X0 Y0 is, op of the dot that change a knife and workpiece coordinate fasten origin coincide; Cutting tool of G00 X20 Y10 moves to choose location to A quickly; X60 Y30 cutting tool from only then dot A moves quickly to terminal C. 3.

Interpolation plane chooses form of statement of statement of G17, G18, G19: : of function of instruction of G17 G18 G19? Song of Xing Ju ≡ seeks? of correct of Piao a legendary venomous insect to pursue 4 planar set pursue instruction of citing of 5 planar choices explains: (1)G17 expresses to choose XY plane; (2)G18 expresses to choose ZX plane; (3)G19 expresses to choose YZ plane. (if the graph is shown 4 times) the milling machine to 3 coordinate linkage and machining center, commonly used these instructions decide the machine tool is inside which plane undertake interpolation moves. For example, treatment shows a part 5 times like the graph, when face of milling circular arc 1 when, undertake circular arc interpolation inside XY plane, should choose G17; When face of milling circular arc 2 when, answer to be machined inside YZ plane, choose G19. Numerical control system switchs on the mobile phone acquiescent G17 condition. CNC Milling